مخطط مراحل تطور الكون - كتاب علوم الأرض و الفضاء - الصف 12 - الفصل 1 - المملكة العربية السعودية

مخطط يوضح مراحل تطور الكون وزارة التعليم Ministry of Education 2025 - 1447 22 --- VISUAL CONTEXT --- **DIAGRAM**: مخطط يوضح مراحل تطور الكون Description: A funnel-shaped diagram illustrating the eight main stages of the universe's evolution, ordered chronologically from the earliest moments (bottom) to the present day (top). The diagram shows a progression from a dense, energetic state with fundamental particles and forces to the formation of atoms, stars, galaxies, and galaxy clusters. Each stage is labeled with an Arabic number and 'المرحلة' (Stage) on the right side, and corresponding English timeframes are provided on the left side, indicating the age of the universe at that point or the duration of the stage. X-axis: N/A Y-axis: N/A Data: The diagram visually represents the timeline of the universe's evolution, starting from the Big Bang and expanding over billions of years. Different physical phenomena and structures are depicted at various time points. Key Values: المرحلة 8, 14 billion years, 11 billion years, 3 billion years, المرحلة 7, 700 million years, 400,000 years, المرحلة 6, 5,000 years, المرحلة 5, 3 minutes, 0.01 seconds, المرحلة 4, 1 µsec, المرحلة 3, 0.01 ns, المرحلة 2, 10⁻³⁵ s, المرحلة 1, 10⁻⁴³ s Context: This diagram serves as a visual aid to understand the Big Bang theory and the major epochs in the history of the universe, from its very beginning to its current state, highlighting the vast timescales involved in cosmic evolution.